Zenzai (sweet red been soup with rice cake) is Japanese traditional desert. I know there are many other countries which eat similar soup.
Well, here in Fukuoka (southern Japan), we call this zenzai, but people from East Japan call this Siruko…. we have shiruko here too, but then our shiruko use red bean paste. similar, but different….
When we order zenzai or shiruko, it usually comes with Takuan (yellow pickled radish). People need salty food when they are eating sweet thing.
Try it if you see this somewhere!!